I want to remove Adobe Reader 8.1.5 from my computer, and install a new version. But I cannot remove Reader8.1.5 by using "Add or Remove Program" function, actually there is no "Remove" button shown beside this software.
I click the Reader 8.1.5 icon in Start>All Programs>Adobe Reader 8, there is a window shown the following sentence:
"this patch package Could not be opened. Verifty that the patch package exists and that you can access it, or contact the application vendor to verify that is is a valid Windows Installer patch package"
How can I remove Reader8.1.5?